Abstract
"In this study, a simple refining approach was tested to prepare an advanced fibrillated cellulosic material from wheat straw to avoid harmful oxidative pretreatment chemicals and to sort out cost and drainage issues. The wheat straw was delignified by pulping (soda-anthraquinone) and bleaching, and converted into advanced fibrillated cellulosic material by pretreatment with mild potassium hydroxide, followed by refining using a Valley beater. Scanning electron microphotographs analyzed by Image J software confirmed the micro-nano scale fibrillation in the prepared advanced fibrillated cellulosic material. After addition of 5% advanced fibrillated cellulosic material as a strength additive, the pulp drainability (36 °SR) was found suitable for papermaking. Paper handsheets containing 5% advanced fibrillated cellulosic material showed 4.7% reduction in bulk and 30%, 17% and 124% increment in breaking length, burst factor and double fold, respectively, when compared with the control set. Comparable tear and optical properties were also observed with better surface properties. The laboratory results confirmed the potential of the prepared advanced fibrillated cellulosic material as an appropriate additive for paper quality improvement."
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